WASHINGTON, DC - JULY 30: Senate Majority Leader Harry Reid (D-NV) answers reporters' questions during a brief news conference after attending the Senate Democratic Caucus policy luncheon in the Ohio Clock Corridor at the U.S. Capitol July 30, 2013 in Washington, DC. Reid voiced support for President Barack Obama's proposal to lower corporate tax rates as part of a "grand bargain" with House Republicans. (Photo by Chip Somodevilla/Getty Images)Feds Charge Oklahoma Man With Threatening To Kill Harry Reid Credit: Chip Somodevilla/Getty Images

TULSA, Okla. (AP) — A 31-year-old Oklahoma man has been charged in federal court with threatening to kill U.S. Senate Majority Leader Harry Reid and harm the Nevada lawmaker’s family unless he resigned from office.

In the 10-page complaint that was filed under seal in federal court in July but announced Tuesday, federal prosecutors allege that Charles Jason Moreland sent expletive-ridden emails all in capital letters to Reid in April, declaring that the lawmaker was “a dead man.”

Moreland is scheduled to be arraigned Wednesday in Tulsa federal court, and could face up to 30 years in prison and $750,000 in fines if he’s convicted, Assistant U.S. Attorney Trent Shores said.

“Any time we receive information about threats of this nature, we take them very seriously,” Shores said Tuesday.

On April 15, according to the federal complaint, Reid received an email message: “You’re a dead (expletive) man Harry Reid! A dead man!” Three days later, the senator received another threatening message. Other messages threatened his family

The messages claimed to be authored by “Thomas Payne” and provided a bogus Nevada address. Investigators later traced the Internet address to an account in Moreland’s name.

Phone messages left with the FBI and Moreland’s defense attorney were not immediately returned Tuesday. A phone message left with a staffer in Reid’s Washington office was also not immediately returned.